*
   * A push promise contains all the headers that pertain to a server-initiated request, and a
   * `promisedStreamId` to which response frames will be delivered. Push promise frames are sent as
   * a part of the response to `streamId`. The `promisedStreamId` has a priority of one greater than
   * `streamId`.
   *
   * @param streamId client-initiated stream ID.  Must be an odd number.

func networkMetricsPrometheus(ch chan<- prometheus.Metric) {
	connStats := globalConnStats.toServerConnStats()

	// Network Sent/Received Bytes (internode)
	ch <- prometheus.MustNewConstMetric(
		prometheus.NewDesc(
			prometheus.BuildFQName(interNodeNamespace, "tx", "bytes_total"),
			"Total number of bytes sent to the other peer nodes by current MinIO server instance",
			nil, nil),
		prometheus.CounterValue,

            '-' + sum(rate(labels('istio_tcp_connections_closed_total', podLabels)), by=['pod'])
          ),
        ],

      bytes:
        [
          self.query(
            'Sent ({{pod}})',
            sum(rate(labels('istio_tcp_sent_bytes_total', podLabels)), by=['pod'])
          ),
          self.query(
            'Received ({{pod}})',

| `minio_notification_events_sent_total`        | Total number of events sent to the targets. <br><br>Type: counter                                     | `server` |
| `minio_notification_events_skipped_total`     | Number of events not sent to the targets due to the in-memory queue being full. <br><br>Type: counter | `server` |

### Replication metrics

)

// TargetStats contains statistics for a target.
type TargetStats struct {
	// QueueLength is the queue length if any messages are queued.
	QueueLength int

	// TotalMessages is the total number of messages sent in the lifetime of the target
	TotalMessages int64

	// FailedMessages should log message count that failed to send.
	FailedMessages int64

var errLessData = StorageErr("less data available than what was requested")

// errMoreData = returned when more data was sent by the caller than what it was supposed to.
var errMoreData = StorageErr("more data was sent than what was advertised")

// indicates readDirFn to return without further applying the fn()
var errDoneForNow = errors.New("done for now")

package okhttp3

import java.io.IOException
import okhttp3.Interceptor.Chain
import okio.Buffer
import okio.BufferedSink
import okio.ForwardingSink
import okio.Sink
import okio.buffer

/** Rewrites the request body sent to the server to be all uppercase.  */
class UppercaseRequestInterceptor : Interceptor {
  @Throws(IOException::class)
  override fun intercept(chain: Chain): Response {
    return chain.proceed(uppercaseRequest(chain.request()))

This is useful for operations that need to happen after a request, but that the client doesn't really have to be waiting for the operation to complete before receiving the response.

This includes, for example:

* Email notifications sent after performing an action:
    * As connecting to an email server and sending an email tends to be "slow" (several seconds), you can return the response right away and send the email notification in the background.
* Processing data:

    + row.withPanels([
      panels.timeSeries.connections('Connections', queries.connections, 'Connections opened and closed per instance'),
      panels.timeSeries.bytesRate('Bytes Transmitted', queries.bytes, 'Bytes sent and received per instance'),
      panels.timeSeries.dns('DNS Request', queries.dns, 'DNS queries received per instance'),
    ]),
    row.new('Operations')
    + row.withPanels([
      panels.timeSeries.base(

For the more details, see the implementation code in [GsaApiManager](/src/main/java/org/codelibs/fess/api/gsa/GsaApiManager.java).